The 'illegal' act of paying for sex, although it's 'legally' committed many times in dating. Guy pays for dinner, pays for the movie, girl is flattered by guy's "generosity," so she gives him some ass at the end of the night, which is exactly what he was hoping to get in return for the money he shelled out and why he took her out to begin with. Why it's illegal to just give the girl the money straight up to fuck him that he would've spent on the date anyway is beyond me.

"I don't understand why prostitution is illegal. Why should prostitution be illegal? Selling is legal, fucking is legal. Why isn't selling fucking legal? After all, giving somebody an orgasm is hardly the worst thing you can do to them!" - George Carlin

1. the act of engaging in sexual activity in exchange for payment from a person with whom you are not in a relationship with.
2. the act of engaging in sexual activity in exchange for payment from a husband, wife, boyfriend, or girlfriend, in the form of contiued love and support be it moral, emotional, or financial.

Sex is legal. Getting paid is legal. What's wrong with being a prostitute? Prostitution is nothing more than being paid for sex.

The act of paying money for the sexual favors of a member of the opposite sex or the same sex.
It is illegal in most of the USA unless you film it or photogragh it, then it's art, it's legal, and it's an $8 billion dollar a year industry.

Jenna: "I used to suck cock for $25.00 in the front seat of strangers cars in broad daylight."
Howard: "And now you're rich and famous and every high school kid knows who you are."
Jenna:"That's right, now that I do cumshots and anal on DVD, the law can't touch me and I'm rich"
Howard:"So you get paid big bucks for anal sex but that's not prostitution?"
Jenna:"As long as someone in the room has a camera,and millions of people can watch, my ass is for sale legally."